diff --git a/src/Exception/InvalidBarcodeException.php b/src/Exception/InvalidBarcodeException.php
index 25bd4cd..88d3a78 100644
--- a/src/Exception/InvalidBarcodeException.php
+++ b/src/Exception/InvalidBarcodeException.php
@@ -37,4 +37,14 @@ public static function becauseGroupSeparatorWasNotExpected(string $value): self
     {
         return new static(sprintf('Group separator was not expected in AI "%s"', $value));
     }
-}
\ No newline at end of file
+
+    public static function becauseValueContainsInvalidCharacters(string ...$invalidCharacters): self
+    {
+        return new static(sprintf(
+            'Value contains invalid characters: %s',
+            implode(', ', array_map(static function (string $character) {
+                return "\"$character\"";
+            }, $invalidCharacters))
+        ));
+    }
+}
diff --git a/src/Parser/Parser.php b/src/Parser/Parser.php
index 5378999..481f4f8 100644
--- a/src/Parser/Parser.php
+++ b/src/Parser/Parser.php
@@ -13,6 +13,90 @@
  */
 final class Parser implements ParserInterface
 {
+    private const ENCODABLE_VALUE_CHARACTERS_SET = [
+        '!',
+        '"',
+        '%',
+        '&',
+        '\'',
+        '(',
+        ')',
+        '*',
+        '+',
+        ',',
+        '-',
+        '_',
+        '.',
+        '/',
+        '0',
+        '1',
+        '2',
+        '3',
+        '4',
+        '5',
+        '6',
+        '7',
+        '8',
+        '9',
+        ':',
+        ';',
+        '<',
+        '=',
+        '>',
+        '?',
+        'A',
+        'B',
+        'C',
+        'D',
+        'E',
+        'F',
+        'G',
+        'H',
+        'I',
+        'J',
+        'K',
+        'L',
+        'M',
+        'N',
+        'O',
+        'P',
+        'Q',
+        'R',
+        'S',
+        'T',
+        'U',
+        'V',
+        'W',
+        'X',
+        'Y',
+        'Z',
+        'a',
+        'b',
+        'c',
+        'd',
+        'e',
+        'f',
+        'g',
+        'h',
+        'i',
+        'j',
+        'k',
+        'l',
+        'm',
+        'n',
+        'o',
+        'p',
+        'q',
+        'r',
+        's',
+        't',
+        'u',
+        'v',
+        'w',
+        'x',
+        'y',
+        'z',
+    ];
     private const FIXED_LENGTH_AIS = [
         '00' => 20,
         '01' => 16,
@@ -119,6 +203,8 @@ public function parse(string $data): Barcode
                 $position += $length + strlen($this->config->getGroupSeparator());
             }
 
+            $this->assertValueIsValid($value);
+
             if ($ai) {
                 $foundAIs[$ai] = $value;
             } else {
@@ -168,4 +254,13 @@ private function fetchKnownAI(string $data, int $position): array
 
         return [null, null];
     }
-}
\ No newline at end of file
+
+    private function assertValueIsValid(string $value): void
+    {
+        $unencodableCharacters = array_diff(str_split($value), self::ENCODABLE_VALUE_CHARACTERS_SET);
+
+        if (count($unencodableCharacters) > 0) {
+            throw InvalidBarcodeException::becauseValueContainsInvalidCharacters(...$unencodableCharacters);
+        }
+    }
+}
diff --git a/tests/Parser/ParserTest.php b/tests/Parser/ParserTest.php
index bfa714f..50e012e 100644
--- a/tests/Parser/ParserTest.php
+++ b/tests/Parser/ParserTest.php
@@ -174,11 +174,15 @@ public function dataParsingValidCode(): array
     /**
      * @dataProvider dataParsingInvalidBarcode
      */
-    public function testParsingInvalidBarcode(ParserConfig $config, string $data): void
-    {
+    public function testParsingInvalidBarcode(
+        ParserConfig $config,
+        string $data,
+        string $expectedExceptionMessage
+    ): void {
         $parser = new Parser($config);
 
         $this->expectException(InvalidBarcodeException::class);
+        $this->expectExceptionMessage($expectedExceptionMessage);
         $parser->parse($data);
     }
 
@@ -192,24 +196,34 @@ public function dataParsingInvalidBarcode(): array
         return [
             'empty' => [
                 $default,
-                ''
+                '',
+                'Barcode is empty',
             ],
             'no fnc1' => [
                 $default,
-                '01034531200000111719112510ABCD1234'
+                '01034531200000111719112510ABCD1234',
+                'FNC1 sequence is not found at the start of barcode',
             ],
             'no data after fnc1' => [
                 $default,
-                ']d2'
+                ']d2',
+                'Barcode does not contain data',
             ],
             'invalid data for fixed length ai' => [
                 $default,
-                ']d2010345'
+                ']d2010345',
+                'Not enough data for AI "01": 16 expected but 6 exists',
             ],
             'group separator inside fixed length data' => [
                 $default,
-                "]d20103453\u{001d}200000111719112510ABCD1234"
-            ]
+                "]d20103453\u{001d}200000111719112510ABCD1234",
+                'Group separator was not expected in AI "010345320000011"'
+            ],
+            'value contains invalid characters' => [
+                $default,
+                "]d2010 3`5'1200000111719112510ABCD123",
+                'Value contains invalid characters: " ", "`"'
+            ],
         ];
     }
 }